De Broglie–Bohm theory

But there are other worldviews, if you like, other interpretations.

One of the most famous Complements to these ideas is Bohmian mechanics, if you're familiar with that one, or de Broglie-Bohm theory, which basically does take standard quantum mechanics, which is based on a wave function, but says the particle has a wave function and it also has a position trajectory.

Then you don't need to worry about is the particle here or there.

The particle definitely has a trajectory, it's definitely somewhere.

Is there a third option? Can we have a single deterministic universe?

There is a third major contender, the de Broglie-Bohm pilot wave theory.

This is a return to stark physical reality.

In this interpretation, there is no wave-particle duality where a thing is both.

So the multiverse interpretation is one.

There's another interpretation called d- de Broglie–Bohm pilot waves, which actually is the one that I have a soft spot for.

Okay.

It says there's only one universe, and that when you get entangled particles, they can indeed communicate instantaneously.

And this is part of the problem with quantum mechanics.

a Nobel laureate called de Broglie in the 1930s.

He was the one who said that matter is both a wave and a particle at the same time.

Got a Nobel Prize for it.

He was a gentleman and he got shouted down by Niels Bohr and he said, that's fine and walked off.

But in the 50s, Einstein pushed a fellow called David Bohm to further develop this model.

It's now called the de Broglie Bohm model of quantum mechanics.

And it's a quantum realist model.